Looking for traffic analysis/monitoring tool

Discussion in 'Linux Networking' started by KR, Apr 8, 2006.

  1. KR

    KR Guest

    I've just installed RRDTool/Cacti on a server and set it up to fetch
    interface statistics (via SNMP) from a Linux-based router, and what can
    I say; it rocks. However, the available SNMP statistics are a bit limited.

    I'd like to see how much traffic is coming from and going to the
    different subnets behind the router. I see that Cacti can use scripts to
    collect data, and that packets can be classified and counted with
    user-defined chains in iptables, but Cacti is not (and can't be)
    installed on the router itself.

    What is the best way to collect the data, and how do I get it to Cacti?
    (Or am I using the wrong tool for the job?)
    KR, Apr 8, 2006
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  2. KR

    hakim.st Guest


    hakim.st, Apr 8, 2006
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  3. While those things can be done with mrtg/rrdtool, it'd be a hell
    lot easier if you just run ntop (www.ntop.org) in webmode for
    colorful pictures.

    Good luck
    Michael Heiming, Apr 8, 2006
  4. KR

    KR Guest

    As far as I can see, none those can do what I asked. But thanks anyway.
    KR, Apr 8, 2006
  5. KR

    KR Guest

    I'm a little short on CPU on the router; it has 26 interfaces and
    already runs a caching DNS server. But you're right, ntop does display
    some really nice graphs.
    KR, Apr 8, 2006
  6. KR

    sal paradise Guest

    sal paradise, Apr 8, 2006
  7. KR

    sal paradise Guest

    sal paradise, Apr 8, 2006
  8. KR

    KR Guest

    I've had a quick look at the links, and NetFlow seems to be just what
    I'm looking for. To my surprise, I also learned that lots of network
    equipment (including Cisco routers) can export NetFlow data.
    KR, Apr 9, 2006
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